In article ,
Jethro_uk wrote:
On Thu, 05 Jul 2018 08:00:50 +0000, Bob Eager wrote:

On Thu, 05 Jul 2018 01:57:16 +0000, Johnny B Good wrote:

On Wed, 04 Jul 2018 21:07:47 +0000, Andrew Gabriel wrote:

====snip====


I accidently left my Hotpoint on fast freeze for a few days when it
was quite new. It went below -40C (how much below I don't know).
The thermometer had sucked all the liquid back into the bulb, and the
lowest marking on the scale before that was -40C.

That is the one temperature where the use of C or F is redundant. You
could have simplified it to "-40" and let the reader choose their
preferred scale. :-)

I hate it when newspapers say "the mercury dropped to below -50".
Mercury freezes before -40 ...

Mercury hasn't been used in thermometers for *years* ....

That applies to new ones, but plenty of mercury ones still exist.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle